Notification not working in ASPNET Core Blazor

I am trying to implement the Notification service in my Blazor app.

I have the imports in _Imports.razor:

@using Radzen
@using Radzen.Blazor

This in my Program.cs:

In my _Layout.cshtml:
Bottom of <link rel="stylesheet" href="_content/Radzen.Blazor/css/default-base.css">
Bottom of <script src="_content/Radzen.Blazor/Radzen.Blazor.js"></script>

In my razor components:

@inject NotificationService notificationService
<RadzenButton Text="Save" Click=@(args => Save(new NotificationMessage { Severity = NotificationSeverity.Success, Summary = "Success Summary", Detail = "Success Detail", Duration = 40000 })) />
    private async Task Save(NotificationMessage message)
            await userManager.UpdateAsync(User);

There are no errors and nothing in the browser console but the notification doesn't show up.

Fixed it. I saw another article stating I needed:

<RadzenNotification />

in my MainLayout.razor.